Q. Report a Problem with a Traffic Signal or Sign
Although the Federal Highway Administration (FHWA) adopts national standards, the individual state and local highway agencies select, install, operate, and maintain traffic control devices on all roadways (including the Interstate and U.S. numbered systems) nationwide.
You can find the FHWA's Manual on Uniform Traffic Control Devices (MUTCD) at this site:
Links to state Departments of Transportation and/or state government web sites are available at